This is my first time raising chickens, and I noticed this when checking their coop this morning. I've read it's normal for them to shed their intestinal lining, but I can't easily tell the difference between that and signs of coccidiosis. They are all just over eighteen weeks old, 5 barred rock hens and a Jersey giant rooster. If this is coccidiosis, can I put Corid in the waterer they all drink from, even if they're not all affected? I have no easy way to separate them.